Abstract
Abstract Infant milk formulae with 0·5–1·0% or without lactulose were fed to weanling rats for five weeks to assess the effect of preponderance of Bifidobacteria on the intestinal absorption of certain nutrients. No significant differences in the absorption and retention of nitrogen, calcium, phosphorus and iron were observed among any of the formulae. Absorption and retention of nitrogen (>85%) and phosphorus (>95%) were high compared to those for calcium and iron (56–77%). The results further indicated that bifidobacterial flora had no effect on the absorption and retention of nutrients from the formulae. Incorporation of lactulose did not affect the growth, blood composition or histopathology of liver, indicating that it had no adverse effects on continuous consumption by rats during their growth period.
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